问题
选择题
--Would you be ___ to help me with my study?---I'll be very glad ___ it.
A．too kind, doing
B．very kind, doing
C．as kind as, to do
D．so kind as, to do
答案
答案：D
be so kind as to do意为:请费心, 答语中的glad后跟不定式.
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